> For the complete documentation index, see [llms.txt](https://docs.youlean.co/youlean-loudness-meter/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.youlean.co/youlean-loudness-meter/introduction.md).

# Introduction

- [Overview](https://docs.youlean.co/youlean-loudness-meter/introduction/readme.md)
- [System Requirements](https://docs.youlean.co/youlean-loudness-meter/introduction/system-requirements.md)
- [Installation - Windows](https://docs.youlean.co/youlean-loudness-meter/introduction/installation-windows.md)
- [Installation - macOS](https://docs.youlean.co/youlean-loudness-meter/introduction/installation-macos.md)
- [License Activation](https://docs.youlean.co/youlean-loudness-meter/introduction/license-activation.md)
- [FREE vs PRO](https://docs.youlean.co/youlean-loudness-meter/introduction/free-vs-pro.md)
- [End-User License Agreement](https://docs.youlean.co/youlean-loudness-meter/introduction/end-user-license-agreement.md)